US 11,754,668 B2
Detection method, detection apparatus, and system
Lutao Gao, Beijing (CN); Sha Ma, Beijing (CN); and Sida Song, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Apr. 8, 2021, as Appl. No. 17/225,507.
Application 17/225,507 is a continuation of application No. PCT/CN2019/108443, filed on Sep. 27, 2019.
Claims priority of application No. 201811253407.X (CN), filed on Oct. 25, 2018.
Prior Publication US 2021/0255275 A1, Aug. 19, 2021
Int. Cl. G01S 7/02 (2006.01); G01S 13/931 (2020.01); H04W 72/0453 (2023.01)
CPC G01S 7/0232 (2021.05) [G01S 13/931 (2013.01); H04W 72/0453 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method implemented by a detection apparatus, wherein the method comprises:
determining a first frequency point of N frequency points, wherein N is a positive integer greater than 1; and
transmitting a radio signal in a first frequency band of N frequency bands,
wherein the first frequency point is in the first frequency band,
wherein a bandwidth of the first frequency band is a frequency sweep bandwidth of the radio signal,
wherein either:
one of the N frequency bands partially overlaps at least one of other N−1 frequency bands of the N frequency bands, and an absolute value of a difference between lowest frequencies of any two of the N frequency bands is not less than a first threshold (F); or
the N frequency bands have at least one second frequency band that partially overlaps the first frequency band, and an absolute value of a difference between a lowest frequency of each of the at least one second frequency band and a lowest frequency of the first frequency band is not less than F,
wherein F is related to a maximum detection distance, a maximum interference tolerance distance, or a transmit timing moment error, and
wherein F is greater than a first frequency change range (F1) of the radio signal in a first time length (T1).